.navigationBar-container{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 8.5rem;
    line-height: 8.5rem;
    display: flex;
    border-top: 0.1rem solid #999;
    background-color: #fff;
}
.navigationBar_item{
    flex: 1 1 auto;
    text-align: center;
    font-size: 3rem;
}